<template>
  <div style="margin: 20px 20px">
    <el-tree
        :data="data"
        show-checkbox
        default-expand-all
        node-key="id"
        ref="tree"
        highlight-current
        :props="defaultProps">
      </el-tree>
    <el-button :disabled="saveBtnDisabled" type="primary" @click="save">保存</el-button>
  </div>
</template>
<script>
import menu from '@/api/acl/menu'

export default {
  data() {
    return {
      saveBtnDisabled:false,
      data: [],
      defaultProps: {
        children: 'children',
        label: 'name'
      },
      roleId:''

    };
  },
  // 监听器
  watch: {
    $route(to, from) {
      console.log('路由变化......')
      console.log(to)
      console.log(from)
      this.init()
    }
  },

  created () {
    this.init()
  },
  methods: {

    init(){
      if (this.$route.params && this.$route.params.id) {
          this.roleId = this.$route.params.id
          this.fetchDataById(this.roleId)
      } 
    },
    fetchDataById(roleId){
        menu.toAssign(roleId).then(response => {
            this.data = response.data.children
            var jsonList = JSON.parse(JSON.stringify(this.data))
            debugger;
            var list = []
            this.getJsonToList(list, jsonList[0]['children'])
            console.log("最终集合")
            console.log(list)
            this.setCheckedKeys(list)
        })
    },
    //把json数据转成string再转成对象，根据Key获取value数据
    getJsonToList(list, jsonList){
        //遍历这个集合对象，获取key的值
        for(var i = 0; i < jsonList.length; i++){
            if(jsonList[i]['select'] == true && jsonList[i]['level'] == 4){
                list.push(jsonList[i]['id'])
            }
            if(jsonList[i]['children'] != null){ 
              this.getJsonToList(list, jsonList[i]['children'])
            } 
        }
        
    },

    getCheckedNodes() {
      console.log(this.$refs.tree.getCheckedNodes());
    },
    getCheckedKeys() {
      console.log(this.$refs.tree.getCheckedKeys());
    },

    setCheckedKeys(list) {
      this.$refs.tree.setCheckedKeys(list);
    },

    // save(){
    //   this.saveBtnDisabled = true
    //   var ids = this.$refs.tree.getCheckedKeys().join(",");
    //   //vue elementUI tree树形控件获取父节点ID的实例
    //   //node_modules\element-ui\lib\element-ui.common.js
    //   //25348行修改源码
    //   menu.doAssign(this.roleId, ids).then(response => {
    //       if(response.success){
    //           this.$message({
    //             type:'success',
    //             message:'保存成功'
    //           })
    //           this.$router.push({ path: '/acl/role/list' })
    //         }
    //   })
    // }
    save(){
      this.saveBtnDisabled = true
 
      //vue elementUI tree树形控件获取父节点ID的实例
      var ids =  this.$refs.tree.getCheckedKeys().concat(this.$refs.tree.getHalfCheckedKeys()).join(",");
      console.log(ids);
     
      menu.doAssign(this.roleId, ids).then(response => {
        if(response.success){
            this.$message({
              type:'success',
              message:'保存成功'
            })
            this.$router.push({ path: '/acl/role/list' })
          }
      })
    }
  }
};
</script>
